Schmeichel paid tribute to United goalkeeper De Gea for a stunning save just before half-time when his side were trailing 1-0.
He told Sky Sports: "Thank God For David De Gea.
"I think what he pulled out today was one of the best saves I've ever seen in the Premier League. It gave Manchester United a chance. If that goes in then it's 2-0 and then it's really uphill.
"You have to watch the ball before it stops and comes your way. He had to adjust his feet and it was a really difficult height because he had to dive upwards, not downwards.
"It's just an unbelievable save and I think this is a save we'll see time and time again. I say this was significant because it left them with a chance.
"They were 1-0 down and if they lost this game it could have had repercussions for the rest of the season. He kept the team in this game."
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